Copernicium
Transition Metal
Copernicium (Cn) is a chemical element with atomic number 112, classified as a transition metal. At room temperature it is a gas. It was discovered in 1996 by Gesellschaft für Schwerionenforschung (GSI).
Properties
- Atomic number
- 112
- Atomic mass
- 285 u
- Category
- Transition Metal
- Group
- 12
- Period
- 7
- Block
- d-block
- Electron configuration
- [Rn] 5f¹⁴ 6d¹⁰ 7s²
- Phase at STP
- Gas
- Density
- 14 g/L
- Melting point
- —
- Boiling point
- 357 K (83.9 °C)
- Electronegativity
- —
- Atomic radius
- —
- Ionization energy
- —
- Discovery
- 1996 · Gesellschaft für Schwerionenforschung (GSI)
Common uses
Research only
Did you know?
Named after Nicolaus Copernicus and likely a liquid at room temperature.
Experiment with the elements
Copernicium doesn't form any compounds in our lab yet, but the periodic table sandbox lets you combine dozens of other real elements into real compounds — water, table salt, ammonia and many more — with their true chemical formulas.